<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<!-- this is a test for https://bugzilla.mozilla.org/show_bug.cgi?id=521682 -->

  <defs>
    <svg id="d">
      <rect height="50%" width="100%" fill="blue" />
    </svg>
  </defs>

  <use id="u" xlink:href="#d" height="100%" />

</svg>
